So I don't want to make a shirt.. does anyone have any ideas of a place that sells close enough shirts? Or ones I can cuts down the sleeves?

Also.. wig... how do you fit a long pretty wig into a hat like that without bad things happening to it? What do you do with the length of the hair in the back? XD; I've ruined a wig sticking it in a baseball cap so I want to know how it's done.